Nahjul BalaghaSermons
Sermon 198
By Allah, Muawiya is not more cunning than I am, but he deceives and commits evil deeds. Had I not been hateful of deceit I would have been the most cunning of all men. But (the fact is ) every deceit is a sin and every sin is disobedience (of Allah), and every deceitful person will have a banner by which he will be recognised on the Day of Judgement. By Allah, I cannot be made forgetful by strategy, nor can I be overpowered by hardships.